How can I buy Helium HNT?

Could you please elaborate on the steps involved in purchasing Helium (HNT) tokens? I'm interested in acquiring some for investment purposes but I'm unsure of the exact process. Would you recommend a specific cryptocurrency exchange for trading HNT? Additionally, are there any particular factors I should consider before making a purchase, such as market volatility or long-term potential? I'd greatly appreciate your insights and guidance in navigating this process.